function uploadImg(fileInput){
	$("#" + fileInput).trigger("click");
}
//下面用于图片上传预览功能
function setImagePreview(avalue) {
//	var docObj = document.getElementById("doc");
	var docObj = $("#doc");
//	var oCont = document.getElementById("localImag");
	var oCont = $("#localImag");
//	var imgObjPreview = document.getElementById("preview");
	var imgObjPreview = $("#preview");
	if (docObj.files && docObj.files[0]) {
		//火狐下，直接设img属性
		imgObjPreview.style.display = 'block';
		imgObjPreview.style.width = '100px';
		imgObjPreview.style.height = '100px';
		//imgObjPreview.src = docObj.files[0].getAsDataURL();
		//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式
		var src = window.URL.createObjectURL(docObj.files[0]);
		var img = $("<img src='"+src+"' height='100px' width='100px'>");
		if(oCont.getElementsByTagName("img").length<9){
			$("#localImag").append(img);
			img.css("border","1px solid #ddd");
			img.css("margin","4px");
		}
		else{
			alert("最多上传9张图片！")
		}
					
	} else {
		//IE下，使用滤镜
		docObj.select();
		var imgSrc = document.selection.createRange().text;
		var localImagId = document.getElementById("localImag");
		//必须设置初始大小
		localImagId.style.width = "100px";
		localImagId.style.height = "100px";
		//图片异常的捕捉，防止用户修改后缀来伪造图片
		try {
			localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";
			localImagId.filters
					.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;
		} catch (e) {
			alert("您上传的图片格式不正确，请重新选择!");
			return false;
		}
		imgObjPreview.style.display = 'none';
		document.selection.empty();
	}
	return true;
}